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List:       linux-kernel
Subject:    Re: [patch] fastcall-2.3.32-B6, SYSENTER/SYSEXIT support
From:       Ulrich Drepper <drepper () cygnus ! com>
Date:       1999-12-12 19:05:15
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Richard Gooch <rgooch@ras.ucalgary.ca> writes:

> > > I propose a much simpler abstraction: set up a global page (which
> > > always appears at a fixed address in user-space), and set up a jump
> > > table. Have one jump vector per system call. That's the ABI. End of
> > > story.
> > 
> > I really like that.
> 
> Thanks.

This introduces major problems.  What about libraries/programs which
make syscalls which are not available on the system?  The libc relies
on unimplemented syscalls return ENOSYS.

-- 
---------------.      drepper at gnu.org  ,-.   1325 Chesapeake Terrace
Ulrich Drepper  \    ,-------------------'   \  Sunnyvale, CA 94089 USA
Cygnus Solutions `--' drepper at cygnus.com   `------------------------

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